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Environments of Type Ia Supernovae with Different Relative Equivalent Widths of the Si ii Feature in Their Spectra
Meng XC(孟祥存)1,2; Zhang JJ(张居甲)1,2; Zhao, Xulin3; Li LP(李丽萍)1,4; Wang, Xiao-Feng5
发表期刊ASTROPHYSICAL JOURNAL
2023-02-01
卷号943期号:2
DOI10.3847/1538-4357/acad77
产权排序第1完成单位
收录类别SCI
摘要

Although type Ia supernovae (SNe Ia) are very important in many astrophysical fields, such as cosmology, their explosion mechanisms and progenitor systems still remain unclear. In physics, the relative equivalent width (REW) of the Si ii 635.5 nm absorption feature reflects the velocity interval of the silicon in the SN ejecta, which may then provide constraints on the explosion mechanisms of SNe Ia. In this paper, we divide the SNe Ia into broad-line (BL) and normal-line (NL) subsamples, based on the REW of the Si ii 635.5 nm absorption lines around their maximum lights, and we find that the BL SNe Ia have a dimmer mean brightness than the NL ones, which is possibly a result of their different metallicities. However, based on a pixel statistics study of the environments of the two subsamples, we do not find any significant potential differences in the environments of the BL and NL SNe Ia, which implies that the explosion mechanisms of SNe Ia could be independent of their progenitor populations.

资助项目National Key R&D Program of China[2021YFA1600403] ; NSFC[12173082] ; NSFC[11773067] ; NSFC[11973080] ; NSFC[11733008] ; China Manned Space Project[CMS-CSST-2021-B07] ; Yunnan Ten Thousand Talents Plan-Young amp ; Elite Talents Project ; CAS Light of West China Program ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents
项目资助者National Key R&D Program of China[2021YFA1600403] ; NSFC[12173082, 11773067, 11973080, 11733008] ; China Manned Space Project[CMS-CSST-2021-B07] ; Yunnan Ten Thousand Talents Plan-Young amp ; Elite Talents Project ; CAS Light of West China Program ; Ten Thousand Talents Program of Yunnan for Top-notch Young Talents
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP Publishing Ltd
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000926299200001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]WHITE-DWARFS ; LIGHT CURVES ; METALLICITY ; LUMINOSITY ; EXPLOSION ; GALAXIES ; STAR ; PROGENITORS ; DIVERSITY ; EVOLUTION
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/25843
专题大样本恒星演化研究组
南方基地
中国科学院天体结构与演化重点实验室
通讯作者Meng XC(孟祥存)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China; xiangcunmeng@ynao.ac.cn;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China;
3.School of Science, Tianjin University of Technology, Tianjin 300384, People's Republic of China;
4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
5.Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, People's Republic of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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GB/T 7714
Meng XC,Zhang JJ,Zhao, Xulin,et al. Environments of Type Ia Supernovae with Different Relative Equivalent Widths of the Si ii Feature in Their Spectra[J]. ASTROPHYSICAL JOURNAL,2023,943(2).
APA Meng XC,Zhang JJ,Zhao, Xulin,Li LP,&Wang, Xiao-Feng.(2023).Environments of Type Ia Supernovae with Different Relative Equivalent Widths of the Si ii Feature in Their Spectra.ASTROPHYSICAL JOURNAL,943(2).
MLA Meng XC,et al."Environments of Type Ia Supernovae with Different Relative Equivalent Widths of the Si ii Feature in Their Spectra".ASTROPHYSICAL JOURNAL 943.2(2023).
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